Which type of cell produces proteins that form the tough, water-insoluble layer in the skin?

a. melanocytes
b. Granstein cells
c. keratinocytes
d. Langerhans cells
e. pigmented cells


ANSWER: c

Biology & Microbiology

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The important advances stemming from comparative genomics include the ability to  

_____ draw particular conclusions about species. _____ draw general conclusions about evolution. _____ infer function about an unsequenced genome using synteny. _____ develop a haplotype map. _____ distinguish how proteins bind to receptors.

Biology & Microbiology

The first part of the small intestine is the ____

a. duodenum b. ileum c. colon d. cecum e. jejunum

Biology & Microbiology

Which of the following is a significant function of the nose?

A) conditioning of inhaled air B) gas exchange C) equilibrium D) carbonic anhydrase activity

Biology & Microbiology

In the final step of the citric acid cycle, oxaloacetate is regenerated through the oxidation of malate and this is coupled with the production of which other molecule?

(a) FADH (b) NADH (c) GTP (d) CO2

Biology & Microbiology